368 



beeholes to render it useless for timber. The effect of a dense under- 

 growth apparently delays the appearance of the borer and reduces the 

 incidence, but not to a very great extent [see this Review, Ser. A, vii, 

 p. 135]. 



The moths, Hyhlaea puera and Pyrausla machaefralis, have been 

 less numerous, and have been replaced by Noctuid pests to some extent. 



Beguet (M.). Tableau synoptique de Determination des Stades 

 evolutifs de la Schistocerca peregrina, 01. — Bull Soc. Hist. Nat. 

 Afr. Nord, Algiers, x, no. 6, 15th June 1919, p. 129, 4 figs. 



This chart shows the various stages of development of the locust, 

 Schistocerca peregrina, 01., with sufficient description to serve for the 

 recognition of each, and gives some indication of the amount of damage 

 to be expected from each stage. 



Neave (S. a.). The Use of Scientific and Popular Names in Economic 

 Biology. — Ann. Applied Biol., Cambridge, v, nos. 3-4, April 1919, 

 pp. 274-275. 



Lack of uniformity in nomenclature with regard to both popular 

 and scientific names is the frequent cause of one or the other being 

 omitted in works on economic biology. To alleviate this difficulty 

 it is suggested that a central body be formed, the duty of which 

 would be to collect data as to all recognised popular names throughout 

 the Enghsh-speaking world. A list, reducing these names to a minimum, 

 should be compiled, to which as far as possible all authors should 

 agree to adhere. 



To make comparisons of results possible between those who speak 

 different languages the use of scientific names as well as popular 

 ones is essential. If objected to in the text they may be given as 

 a footnote, as is done in some of the publications of the United States 

 Department of Agriculture. 



An appeal is made for final decision as to the accepted scientific 

 names of the principal animals and plants of economic value, and 

 this would remove one of the chief objections to their use. Care 

 should also be taken in the selection of popular names, and these 

 should be as informative as possible. 



Okamoto (H). Honpo-San Kusa-Kagero-Kwa ni Kwansuru Kenkyu. 



[Studies on the Chrysopidae of Japan.] — Hokkaido-Noji-Shikenjo 

 Hokoku [Report of the Hokkaido Agricultural Experiment Station], 

 Sapqioro, no. 9, 30th March 1919, 76 pp., 7 plates. 



The morphology, habits and life-history, together with the characters 

 of all the genera and species of Chrysopids that are known to occur 

 in Japan, are described. Records of distribution and importance 

 from the agricultural point of view are added. As regards life-histories, 

 Chrysopa japana, sp. n., has two generations a year, the adults appear- 

 ing in June and August ; hibernation occurs in the larval state within 

 a cocoon. Chrysopa nipjwnensis, Okam., passes the winter in the 

 adult stage. This species devours on an average about 100 Aphids 

 a day, and a single female lays as many as 580 eggs. 



